"It's a matter of investigation how termites attacked bundles of currency notes stacked in a steel chest," he said. The money was put in the chest in January.

The termites had damaged bank furniture and documents in the past.

The police have registered a case of negligence against bank officials in Barabanki, a town 20 miles southwest of Lucknow, the Uttar Pradesh state capital. In India, police register a case before opening an investigation.